公开(公告)号：JPS4955610A

公开(公告)日：1974-05-30

申请号：JP7136973

申请日：1973-06-26

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C45/16

公开(公告)号：DE1720300A1

公开(公告)日：1972-04-13

申请号：DE1720300

申请日：1967-09-02

Applicant: BASF AG

Inventor： HEEL HELMUT DR ,  KLINGENSPOR HELMUT DR ,  KLEE WOLFGANG ,  FUCHS HUGO DR ,  GOESCHEL GERT DIPL-ING ,  SPERBER HEINRICH DR

IPC: B01J19/22 ,  B01J19/28 ,  C08G2/00 ,  C08G1/04

公开(公告)号：DE1768982A1

公开(公告)日：1972-01-13

申请号：DE1768982

申请日：1968-07-19

Applicant: BASF AG

Inventor： SPERBER HEINRICH DR ,  ZIPFEL JOSEF ,  HAAS HANS DR

IPC: C07C47/058 ,  C07C45/00 ,  C07C45/38 ,  C07C45/78 ,  C07C67/00 ,  C07C47/04

Abstract: 1,235,138. Formaldehyde. BADISCHE ANILIN- & SODA-FABRIK A.G. 1 Nov., 1968 [4 Nov., 1967; 2 Dec., 1967; 19 July, 1968], No. 51928/68. Heading C2C. Formaldehyde solutions are prepared by reaction of methanol in the gas phase with O 2 or a gas containing free O 2 with or without steam at 600-800‹ C. in contact with a silver catalyst followed by multistage absorption of the formaldehyde from the resultant gas, the gas passing through at least three absorption stages at 60-90‹ C. under acid conditions, the first to penultimate stages containing an aqueous ureaformaldehyde precondensate solution having a molar ratio of formaldehyde to urea of from 1.8:1 to 2.8:1 and the final stage containing an aqueous urea solution, the residence time in said final stage being not more than one hour. Aqueous methanol recovered from the gas leaving the final absorption stage is preferably recycled for oxidation, and the mixture of recovered aqueous methanol and fresh methanol is treated with an alkaline agent to a pH of at least 9 before oxidation. The aqueous formaldehyde-urea precondensate solution may be obtained by mixing liquids from the final and first absorption stages and condensing under acid conditions.

公开(公告)号：DE1961363A1

公开(公告)日：1971-06-16

申请号：DE1961363

申请日：1969-12-06

Applicant: BASF AG

Inventor： HAAS HANS DR ,  HUSSY OSKAR DIPL-ING ,  SCHREIBER HANS DIPL-ING ,  SPERBER HEINRICH DR ,  ZIPFEL JOSEF

IPC: B01J8/02 ,  C07C45/38 ,  B01J

Abstract: Cooler for reactor as in BE 729336 has finned tubes in parallel arrangement through which coolant is passed, and which serve as support for metal catalyst support. Pref. several rows of tubes are used, the top one being of finned tubes, and other rows being of smooth tubes of dia. >=20% less.

公开(公告)号：CH508465A

公开(公告)日：1971-06-15

申请号：CH147669

申请日：1969-01-30

Applicant: BASF AG

Inventor： SANDER BRUNO DR ,  SPERBER HEINRICH DR

IPC: A01N25/02 ,  B27K3/50 ,  B27K3/34

公开(公告)号：DE1720264A1

公开(公告)日：1971-06-09

申请号：DE1720264

申请日：1967-02-16

Applicant: BASF AG

Inventor： RICKER ERNST DR ,  FUCHS HUGO DR ,  SPERBER HEINRICH DR ,  WILHELM HANS DR

IPC: C08G2/00 ,  C08G1/04

公开(公告)号：CH502406A

公开(公告)日：1971-01-31

申请号：CH1108868

申请日：1968-07-24

Applicant: BASF AG

Inventor： SANDER BRUNO DR ,  OTTO WITTMANN ,  SPERBER HEINRICH DR

IPC: C08K5/06 ,  C08L61/10 ,  C08G37/00

公开(公告)号：DE2231248A1

公开(公告)日：1974-01-17

申请号：DE2231248

申请日：1972-06-26

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C47/04

Abstract: A process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst, wherein a vaporous mixture of water and oxygen is introduced into the vaporous starting mixture containing water, methanol and oxygen before entry into the catalyst bed. Formaldehyde produced by the process is a disinfectant, tanning agent, reducing agent and raw material for the production of synthetic resins, adhesives and plastics.

公开(公告)号：NL7308576A

公开(公告)日：1973-12-28

申请号：NL7308576

申请日：1973-06-20

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  C07C47/055 ,  D06P3/54 ,  C07C45/16 ,  C07C47/04 ,  B01J11/20

Abstract: A process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst, wherein a vaporous mixture of water and oxygen is introduced into the vaporous starting mixture containing water, methanol and oxygen before entry into the catalyst bed. Formaldehyde produced by the process is a disinfectant, tanning agent, reducing agent and raw material for the production of synthetic resins, adhesives and plastics.

公开(公告)号：BE801364A

公开(公告)日：1973-12-26

申请号：BE132650

申请日：1973-06-25

Applicant: BASF AG

Inventor： DIEM HANS DR ,  MATTHIAS GUENTHER DR ,  AICHER ALBRECHT ,  HAAS HANS DR ,  SCHREIBER HANS DIPL ING ,  SPERBER HEINRICH DR

IPC: C07C47/055 ,  C07C45/00 ,  C07C45/38 ,  C07C67/00 ,  D06P3/54 ,  C07C

Abstract: A process for producing formaldehyde by oxidizing dehydrogenation of methanol in the presence of a silver catalyst, wherein a vaporous mixture of water and oxygen is introduced into the vaporous starting mixture containing water, methanol and oxygen before entry into the catalyst bed. Formaldehyde produced by the process is a disinfectant, tanning agent, reducing agent and raw material for the production of synthetic resins, adhesives and plastics.